Railway brake structure



Aug. 4, 1936. E. G. BussE RAILWAY BRAKE STRUCTURE Filed Jui 11, 1951 2Sheets-Sheet l Y hi 6023f" 5/10}? 50556 Qf/axwey Aug. 4,' 1936. E. G.BUSSE RAILWAY BRAKE STRUCTURE I Eiied July 11, 193} 2 Sheets-Sheet 2Wren/0r 451W? Edsse Patented Aug. 4, 1936 PATENT OFFICE.

RAILWAY BRAKE STRUCTURE Edwin G. Busse, Chicago, 111., assignor toChicago Railway Equipment Company, Chicago, 111., a

corporation of Illinois Application July. 11, 1931, Serial No. 550,238

19 Claims. (01. 188-210) This invention relates to railway rolling stockand consists particularly in novel brake beam guiding and safeguardingmeans.

Various devices have been developed for guiding and safeguarding brakebeams, in most of which a strap or arm extending beneath the beamengages or is secured to the spring plank, a

transom or other frame element behind the beam.

. In some cases, however, this arrangement is impractical as, forinstance on short trucks where inside hung brake beams are comparativelyclose together. Furthermore, it is more difficult to accurately controlthe position of the beam by a guide at the rear thereof than "by a guideat the front thereof. The present invention has for its main'object theprovision of a device which extends in front of the brake beam assemblyand safeguards the assembly and maintains the desired angularity of theassembly and particularly the brake shoe and which may be readilyapplied to the type of truck referred to above.

This object and more detailed objects are attained by the structureillustrated in the accompanying drawings in which:

Figure 1 is a vertical longitudinal section through part of a truckillustrating one form of my invention.

Figure 2 is a rear elevation of the same structure shown partially invertical transverse section.

Figures 3 to 10, inclusive, are detail vertical sections illustratingthe various modifications of the invention.

Figure 11 is a detail end elevation of still another modification.

Figure 12 is a vertical section taken substantially on the line I2i2 ofFigure 11.

Figure 13 is a detail section corresponding with Figures 3 to 11 andillustrating another modification.

Figure 14 is a vertical transverse section taken substantially on' theline Ill-44 of Figure 13.

4 Figure 15 is a horizontal section taken on the line I5l5 of Figure 14.

Figures 1 and 2 illustrate a portion of a truck including a truss-typeside frame I supported. on wheels 2 through the usual journal boxes 3.

50 Inside hung brake beam i is pivotally suspended from brackets 5 bymeans of hangers 6, one being located on each side of the truck andengaging the corresponding brake head 1 at the end of the brake beam.

Projecting from side frame I forwardly of the brake hanger bracket isanother bracket 8 which rigidly mounts the upper end. of an auxiliarysupporting strap 9 by means of pin ID, the strap being hooked through aloop ll projecting sidewardly from the upper part of the brake head. 5The strap 9 is resilient and serves toprevent undesired tilting of thebrake beam and head and is arranged to maintain a parallel or concentricrelation between the surface of the brake shoe and the wheel and tothrust the brake 10 beam away from the wheel when pressure is released.

In Figure 3, strap I2 is rigidly secured to a bracket l3 projecting fromthe side frame, the bracket having an arcuate bottom web against which asimilarly shaped portion it of strap I2 is pressed by a pin l5. Strap l2engages the front end of an arm [6 which is rigid with the beamcompression member l1. Arm l6 has a depression I9 receiving the beamtension mem- 20 ber H8. The upright portion of strap [2 is curved toprovide for yielding vertical support of the front end of the beam sothat the entire face of the shoe'may be applied to the wheel even thoughthe shoe is not truly parallel to the wheel tread.

In Figure 4, strap 20 has a loop 2| in itsupper portion extendingthrough an opening 6 la in the upright element of the bracket 6|. A pin22 extends through loop 2! and rigidly secures strap 20 to the bracket.The supporting strap extends downwardly in front of and beneath tensionmember 23 of the brake beam and then loops around the compression member24 and is secured thereto by means of a bracket 25.

In Figure 5, strap 26' is in rigid engagement with bracket 21a in frontof the brake hanger bracket 28 and has a downwardly curving intermediateportion and an inclined lower bearing portion, the latter portionextending beneath pin 21 on brake head 29. As brake beam 30 moves towardthe wheels, pin 21 slides upwardly along strap 26' to the broken lineposition. The elastic guiding and safeguarding straps 9, I2, 20, and 26in this form and in the forms previously described also serve as brakereleases.

In Figure 6, curved strap 3| of yielding material is pivotally mountedin bracket 32 located forwardly of brake hanger bracket 33 and issecured to pin 34 projecting from the side of the brake head 35.

The device 'in Figure 7 is similar to that. in Figure 6 except thatcurved strap 36, pivotally secured to bracket 31, engages the front endof an arm 38 which is rigid with compression mem- .and prevent itsfalling to the tracks.

ber 39 of the truss brake beam and has a recess 49 for receiving tensionmember 4|.

In each of the Figures 8, 9, and 10, the supporting strap is preferablyformed of yielding material and slidably engages an inclined surface onthe supporting bracket, .as clearly illustrated. In each of the forms,the supporting strap slides upwardly on its bracket as the brake beammoves towards the wheels and yieldingly prevents improper tilting of thebeam.

In Figure 8, strap 42 curves rearwardly an then downwardly in front ofthe beam engaging tension member 43 thereof and is rigidly secured tocompression member 44. In Figure 9, strap 45 is secured to a bracket 46mounted on compression member 41, the bracket having a forwardlyprojecting arm 48 provided with a forked front end 49 which receives andsupports tension member 50. In Figure 10, similar to- Figure 8, strap 51is secured to the compression member 53 and engages tension member 52 ofthe beam, but is .located closer to the brake head than in Figure 8.

The form illustrated in Figures 11 and 12 corresponds in general withthat in Figures 8 and 10 except that strap 52a extends substantiallyvertically upwardly from the brake beam and then bends sharply andpasses between a pair of spaced web elements 53a projecting inwardlyfrom brake hanger bracket 54 and providing a yielding support for ,thestrap in front of the pivot P for the brake hanger H.

Figures 13, 14, and 15 illustrate a modification similar to that inFigure 10, except that strap 59 .bears against an adjustable plate 51which is freely mounted between upright legs 56 of brack et 55. Plate 51rests upon screws 60 threaded in plate 6! which connects the lower endsof legs 55. The angle of bearing plate 51 as well as its verticalposition may be varied to conform with particular conditions, such asthe length of the resilient guiding and safeguarding strap 59 and thecondition of the brake shoe,

In all of the forms, the resilient auxiliary support strap and itsbracket are located substantially in front of the pivotal support of thebrake beam hanger, that is, towards the wheels from a line extendingtransversely of the truck through the brake hanger pivots on the truckside frames,

and in such position as not to interfere with other brake rigging, Thedevices in all forms designated 9, l2, 20,26, 3], 36, 42, 45, 5|, 52a,and 59 in the drawings permit free movement of the brakes to and fromthe wheels, while at the same time guiding and supporting the beam sothat the shoes will bear concentrically against the wheel treads. Ineach of the Figures 1, 3, 5, 6, 7, 8, 10, 12 and 13, the guiding andsupporting strap engages the brake beam assembly in front of the pivotalaxis of the beam, that is, in front of a line drawn transversely of thetruck between the hanger pivots in the brake heads. In case of brake'hanger failure each of the devices is adapted to bear the entire weightof the beam Devices within the spirit of the invention need not performall o'f'the functions of guiding, supporting, and safeguarding theassociated beam.

Figures 3, 7, 8, 9, 10, 12, and 13 are particularly ,adapted for use inconnection with truss-type .be secured to the frame by rivets or othermeans,

or may be cast integrally therewith as desired. In either case thebrackets may be considered as part of the frame.

Obviously, the invention is not limited to the exact details shown inthe various forms, but other modifications might be made withoutdeparting from the spirit thereof, and I contemplate the exclusive useof all such modifications as come within the scope of the appendedclaims.

What is claimed is:

1. In a railway truck, a side frame, a brake hanger, a pivot on saidframe for said hanger, a brake beam assembly carried on said hanger, aresilient member for guiding and safeguarding said assembly to maintainthe desired angularity of the brake shoe, and means located forwardly ofthe vertical plane of the axis of said pivot and suspending said memberfrom said frame.

2. In a railway truck, a side frame, a bracket thereon, a brake beamassembly pivotally supported from said bracket, an element on said framelocated forwardly of said assembly from said bracket, and a resilientbrake beam guard, guide, or support member depending from said elementand engaging said assembly in front of the pivotal axis thereof, saidmember serving to resist the rotation of said assembly about said axisand to guide the same in its movement to and from the truck wheel.

3. In a railway truck, a frame, a brake hanger, a pivot on said framefor said hanger, a brake head carried by said hanger, and a resilientbrake beam guard, guide, or support member depending from said frame infront of said pivot and engaging said brake head to maintain the desiredangularity thereof in movement of the head towards andfrom the wheel.

4. In a railway truck, a frame, a brake hanger, a pivot on said framefor said hanger, a brake beam assembly carried on said hanger, a memberfor safeguarding and guiding said assembly to maintain the desiredangularity of the brake shoe in its movement towards and from thewheels, and means slidably mounting said member on said frame.

5. In a railway truck, a frame, a brake hanger, a pivot on said framefor said hanger, a brake beam assembly carried on said hanger, a memberfor safeguarding and guiding said assembly to maintain the desiredangularity of the brake shoe in its movement towards and from thewheels, and a member on said frame forwardly of said pivot and slidablymounting said member.

6. In a railway truck, a side frame, a bracket on said frame, a brakehanger, a pivot on said bracket for said hanger, a brake beam assemblysupported along its axis by said hanger, and a guard, guide, orsupportmember for said assembly depending from a point on said bracket in frontof the vertical plane of the axis of said pivot and adapted to maintainthe desired angularity of the brake shoe.

'7. In a railway truck, a side frame structure, an inside hung brakebeam assembly including a hanger pivotally mountedon said framestructure, a member for guiding and safeguarding said assembly, andmeans on said frame structure forward of the pivotal mounting of thehanger on said frame structure for suspending said member, said assemblybeing pivotally engaged by said hanger and member so that it may adjustits angular position to the truck wheels.

8. In a railway truck, a frame part, a brake hanger bracket rigidtherewith, a brake hanger,

a brake head and shoe pivotally carried by said hanger, a guiding andsafeguarding yielding member depending from said bracket and engagingsaid head and shoe forwardly of the pivotal axis thereof, and elementsseparately securing said hanger and said member to said bracket.

9. In a railway truck, a side frame structure, a brake hanger, anelement mounting said hanger on said frame structure, a brake beamassembly carried by said hanger, and a brake beam guard, guide, orsupport member of yielding material depending from a point on said framestructure located substantially directly forwardly of said element andindependent thereof and engaging said assembly to guide the same in itsmovement towards and away from the truck wheel and to safeguard the samein case of hanger failure.

10. In a railway truck, a brake hanger bracket having a pivot for abrake hanger and a portion projecting inwardly from said pivot, and abrake beam guard, guide or support member carried by said portion.

11. In' a railway truck, a brake hanger bracket, a hanger pivoted onsaid bracket, a brake beam carried at its extremity by said hanger, anda brake beam guard, guide, or support carried by a portion of saidbracket located inwardly of said hanger and cooperating with a portionof said beam located inwardly of said extremity thereof.

12. Structure as defined in claim 10 in which the brake beam guard,guide, or support is'normally disposed in a substantially vertical planeand supports the brake beam.

13. In a railway truck, a wheel, a side frame structure including amounting for a brake hanger pivot, a hanger suspended therefrom, a'

brake beam assembly including a brake head and shoe supported by saidhanger for application to said wheel, and a resilient member engaging apart of said assembly in front of the point of hanger support thereof toyieldingly maintain the desired angularity of said brake head and shoerelative to said wheel, said member being suspended from said structureat a point nearer the axis of said wheel than said pivot.

14. In a railway truck, a wheel, a side frame structure including amounting for a brake hanger pivot, a hanger suspended therefrom, a brakebeam assembly including a brake head and shoe supported by saidhangerfor application to said wheel, and a resilient member engaging a part ofsaid assembly in front of the point of hanger support thereof toyieldingly maintain the desired angularity of said brake head and shoerelative to said wheel, said member being suspended from said structureat a point between said pivot and the axis of said wheel.

15. In a railway truck, a wheel, a side frame structure including amounting for a brake hanger pivot, a hanger suspended therefrom, a brakebeam assemblyincluding a brake head and shoe supported by said hangerfor application to said wheel, and a resilient member having its upperend mounted on said frame structure at a point between the verticalplane of the axis of said pivot and the vertical plane of the axis ofsaid wheel and engaging said brake beam assembly between said hanger andsaid Wheel, the elements mounting said member on said frame structurebeing rigid with said frame to hold said member in position to safeguardsaid beam and to yieldingly maintain said brake head and shoe in desiredangular position.

16. In a railway truck, a wheel, a side frame including bracketstructure, a brake guard, guide or safety resilient member and a hangersuspended from said bracket structure, and a brake beam assembly carriedby said hanger and movable forwardly to engage said wheel, said memberengaging said bracket structure forwardly of the point of engagementthereof by said hanger and yieldingly thrusting said assembly towardsits normal position spaced from said wheel.

1'7. In a railway truck, a wheel, a side frame including bracketstructure, a brake guard, guide or safety resilient member and a hangersuspended from said bracket structure, and a brake beam assembly carriedby said hanger and movable forwardly to engage said wheel, said memberengaging said assembly and bracket structure forwardly of the point ofengagement thereof by said hanger and yieldingly thrusting said assemblytowards its normal position spaced from said wheel.

18. In a railway truck, a side frame part, a brake hanger, a brakeassembly including a head and shoe pivotally connected to said hanger, abrake beam guiding and safeguarding member depending from said part andpivotally connected to said head and shoe at a point forwardly of thepivoting of said hanger thereto, and elements independently securingsaid hanger and said member to said part.

19. In a railway truck, a side frame, a bracket on said frame, a singlepivot on said bracket, a single brake hanger on said pivot, a brake beamassembly supported by said hanger, elements on said bracket in front ofthe vertical plane of the axis of said pivot, and an auxiliary guard,guide, or support member mounted on said elements and engaging theforepart of said assembly for maintaining the desired angularity of thebrake shoe.

EDWIN G. BUSSE.

